Harrow



(NoMoael.)

A. C. EVANS.

HARROW. Y No. 291,174. 'PatentedJaull 1, 1884.

271; "up f4 N. FEKERS. Mouuwgmpmf. Wammes'. D. C.

UNrrnDn STATESl PATENT muon.

nusrm o. Evans, Or srmnormnn, OHIO.

HARROW.

SPECIFICATION forming part of Letters Patent Nol 291,174, dated January'1, 1854L Application filed September 18, 1883. (No model.)

To all whom, it may concern:

Be it known that l, AUSTIN C. Evans, a citizen of the United States ofAmerica, residing at Springfield, in the county of Clarke and State ofOhio, have invented certain new and useful Improvements in Harrows, ofwhich the following is a specication, reference being had therein to theaccompanying drawings.

My invention relates to improvements .in harrows.

My invention relates to improvements in the narrow-teeth and in themanner of inserting them in the beam of the harrow.

My invention consists in the construct-ion of a harrow which, whenreversed, may be changed from a straight-toothed harrow to a slanting orinclined toothed harrow, combining the two kinds in the same implementwithout any of the usual accessories used for converting it from onekind to the other. I accomplish this bythe construction of a doubletooth, extending the same distance above the harrow-beam and bent withtwo angles in the center, to form an inclined tooth at one end and astraight toot-h at the other. The manner of inserting the tooth in thebeam is also a part of my invent-ion.

Figure lis a side elevation of a part of a harrowbeam with my improvedharrow-tooth inserted therein. A portion of the beam is broken out, toshow the shape of the tooth and the manner in which it is inserted. Fig.2 is a top view of the same.

A is the harrow-tooth, which consists of a bar (either square or round,as preferred) pointed at each end. The bar (or section of bar or rod) iscut longer than would be required if the tooth were straight throughoutits entire length. It is bent near the middle at a right angle from theline of the straight tooth, and at a distance of about two inches fromthe exterior angle of this bend it is again bent at an angle upwardtoward a perpendicular of about seventy to seventy-five degrees,according to the inclination desired to be given to the part which formsthe slant tooth, which in the iigures is shown projecting above the topofthe harrow-beam B. In inserting the tooth, a hole is first boredthrough the center of the beam B, and t-hen a slot, c, is out 5o' indriving the tooth. The straight section of 6o the tooth is then insertedin the beam, and it is struck upon the part a (which forms a kind ofcentral head) until this portion is driven the dept-h of itself into theslot c.. The upper section of A now forms a slanting tooth, a, and thelower section a straight tooth, c, as seen in the figures.

When it is desired to change the implement i from a straight-toothed toa slanting-toothed harrow, it is only necessary to turn it over orreverse it.

I claim as my invention y 1. In a reversible harrow, a tooth bent 4atopposite angles in the middle, and having one limb of the same extendingin a slanting direction from the beam to the point ofthe same, as setforth.

2. In a harrow a tooth pointed at each end and bent at two oppositeangles in the middle, to form a straight tooth of one section and aslanting tooth of the other section, and to adapt it tok be driven intothe harrowbeam, as set forth.

3. The combination, in a reversible harrow, with the beam having astraight hole and a recess leading from said hole at right angles withthe latter of a tooth having two oppo site angular bends, one section orlimb ofsaid tooth slanting from the beam to the end or point of thesame. Y

4. The combination,with the tooth A, having the angles a and b, and thehorizontal part a between them, the angle a being a right an gle, toform .the straight section ai and the angle b about seventy toseventy-iive degrees, to form the slanting section a', of the beam B,having the straight hole d, adapted for the insertion of section a2, andthe slot c, extending therefrom at an anglewth the central lonnto theVhenfrow-hezun, and to adapt it to ei- Ygtndinal line ofthe beam, as andfor the'pu'r gage with the slot formed in the latter, for the pose setforth. purpose set forth.

5. A barrow-toothV combining in a single In testimony whereof I affix mysignature in 5 piece a straight anda. slantingtooth, and bint presenceof two witnesses.

in the middle ofthe same at two opposterzmg es Y t d T TA, awa-y fromand back toward the vert-ical liu@ 'AU STIB C' EX Abb of thesamem'hereby the central part between Ttnessesz sadangles is formed atright angles to said THOMAS STRONG, 1o vertical line, to allow the toothto beY driven B. C. UONVERSE.

